Ventilating and heating system



Sept. 16, 1952 B, DAVIS VENTILATING AND HEATING SYSTEM Filed Dec. 9,1949 INVENTOR. 79/4 /P 3. PAW/6,

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Patented Sept. 16, 1952 UNITED STATES PATENT oFFIcE VENTILATING ANDHEATING'SYSTEM 1 7 Philip B. Davis, Greenland, H. Application December9, 1949, Serial No. 132.161

1 This invention relates to a ventilating and/or heating system for useparticularly in trucks carrying, young chicks.

It is the primary object of this invention to provide ,a ventilatingand/or heating system which is adapted to reoirculate air, heated orotherwise, or to supply fresh air continuously may die because of lackof oxygen. Again, they may become overheated, which can result instunted growth.

It is a further object of this invention to provide a system which willresult in a uniform distribution of air to the chicks at all times.

It is a still further object of this invention to provide a systemhaving all of the above mentioned advantages while at the same timeoccupying a minimum amount of space within the truck.

The primary feature of the invention resides in the provision andarrangement of slotted supply and return ducts, the supply ducts beinglocated on the floor of the truck and the return ductsbeing positionedadjacent the top of the truck.

A further feature resides in the provision of adjustable exhaust portsin the return ducts for use in exhausting air from the truck orin'channelling the air through the return duct for recirculationpurposes.

Other objects and features of the invention will be set forth more fullyhereinafter.

The full nature of the invention will be understood from' theaccompanying drawings and the following description and claims:

In the drawings Fig. 1 is a longitudinal section view through a truckprovided with the system.

Fig. 2 an end view thereof.

Fig. 3 is a transverse section view taken on.

line 3-3 of Fig. 1 in the direction of the arrows.

Fig. 4 is a transverse section view taken on line 44-of Fig. 1 in thedirection of the arrows.

2 Claims. (01. 98-10) In the drawings, l0 shows the top, floor and endwalls respectively of a truck body within which they invention ishoused. Positioned on the; fioorqof- -the body adjacentthe side walls,

and extending longitudinally thereof are two supply ducts II and I2.Formed at intervals along the entire length of the upperwall l3 of eachduct are the opposed air escape slots I4.

Positioned adjacent the front end of thetruck interior are heating unitsl5 and I6 which confront respectively the supply ducts II and [2. Theseheating units are arranged in right angle relation relative to eachother and, together with the side and end walls of the truck which theiroutside ends abut, they form an air chamber ll from which the air ispropelled into the ducts. It will be observed that ducts H and I2 aredisposed respectively adjacent the side walls of the truck. Duct I2 issubstantially L -shaped as shown and is connected to the air chamber andheating unit IS in right angular relation to duct l l and heating unit[5. Mounted immediately above the heating units is the blower fan [8powered by the electric motor I9. The outside air which enters the truckinterior through the louvers 2| is drawn downwardly through the chamber22 into the air chamber, through the heating units and into therespective ducts. Chamber 22 is defined by the front end wall of thetruck, by partition or flue 34,'by the side Wall Secured to the top ofthe truck body and ex tending longitudinally thereof is thesubstantially L-shaped tapered return duct 24 having slots 25 formed atintervals in its side Walls 26. Adjacent the front end of the returnduct there is provided a main exhaust 21 including a damper 28 pivotallysecured to the truck top and opening upwardly therethrough into acowling 29. Adjacent the rear end of the return duct is a second andauxiliary exhaust 30 having a damper 3| pivotally secured to the trucktop and opening therethrough into the cowling 32,

Extending downwardly from the front end of the return duct is anextension portion 33 which opens into the chamber 22. and is'separatedtherefrom .by the partition 34. The perpendicularly disposed partitionIla extends downwardly from the lower front portion of the upper orreturn duct and is connected to the heating member [5. A damper 35 isadapted to close the return duct extension portion. Both dampers 28 and35 are so connected by linkage as to be moved simultaneously. Thislinkage includes rod 36 having a control handle 31. The, handle ismounted on the side of partition or flue Ilia, and at one end has apivot pin a which extends through said partition. The damper is integralwith said pin. Consequently, as handle 31 is swung, the pivot pin andits integral damper swing with it. Pivotally connected to the oppositeend of rod 36 is a linkage 36a which in turn is pivotally connected tothe depending member 36b secured to the lower face of the upper orreturn ductf Pivotally connected to the other end of linkage 36a; is thedamper arm 360. When the handle 31 is moved downwardly the damper 35 isopened while at the same time, damper 28 is closed. 'lhe reverseoperation opens the main exhaust damper and closes damper 35. It is ofcourse possible to par tially open both when some recirculation and someair discharge is desired. Damper 3i may be adjusted to open or closed,or to an intermediate position through the use of the handle 38. Thishandle is pivotally connected to the depending element 38a secured tothe under face of the upper or return duct. Pivotally connected to oneend of the handle is the linlrage. .39. The other end of the linkageisfixedly secured to ,the damper 3i.

After the chick boxes are stacked in .tiers as desired, the truck startsfor its destination. Oiutside air rushes into the chamber 22 through thelouvers 2 I. The blowerfan draws'it downwardly into the airchamberwhere, if the air istoo cold,

it is heated and then is forced through the supply ducts. The slotsprovided in theseducts permit the air toescape therefrorn and to passupfwardly towards the return duct, thoroughly uniforrnly ventilating thechickboxeswh W apertures 50 formed therein. The ars nals thereturn ductthrough the slots'forn d in the side walls thereof. If it is desiredt6irecircul'ate the air rather than-exhaust it,the dampers hf the mainand auxiliary exhaiists areof course closed while the camper of theextension portion remains open: lithe temperature of the outside air isat the desired point, it will of 'courselbe unnecessary either to heatit or t6 recirculate it.

The exhaust dampers canibe .left an open position to permit the ex efiii l of .theaif'hefore the circuit is completed. It'iisalso pby'ccntrolling the degreeto' which the ,d are opened, to reciroulate apart and to'xhaiist a part of the air. r

While the invention has been illustrated and described in great detailin the idiaw'infgs land foregoing description, thelsameIis'to' be'esasiqeiee as illustrative and not restrictiye in character.

The inventionclaimed is'j A en i a in System fo us i n hi kcarr ingtrucks cQmpriSinga chamber disposedinthe front end of said truckandbeing in communication at its upper ,end with the outside vair, .apair of right angularly disposed heating ,units mounted onthe floor ofsaid truckadjacentlonePoi the forward corners thereof, saidlunitsltcgetheriwith the side and frontwallof 'saidtruck forming achamber in Communication with said. first.men=- tioned chamber, ,ablower .fan mountedimm'e'db ately above said last .mentionedlchamber, apair of supply ducts positioned .on' the .iioor of said truck ,andextending substantially the entire length thereof, one of said ductsbeing in communication with one of said-heating units and extendingalongaside wall of said truck, the other of said ducts being substantiallyll-sh'aped, extending along the other side wall of saidtruck and being.incommunication with said otherness:

ing unit, said ducts each having a plurality of opposed slots formedalong the marginal edges of its upper face, both of said ducts having awidth sufiicient to support thereon in tiered relation between opposedslots a plurality of apertured chick boxes, 2. return duct mounted atthe top of said truck and extending substantially the entire lengththereof, said return duct ,co mmuni cati'ngwith' said first mentionedchamber and having a plurality or slots f'orme'd in spaced relationthrough the side walls thereof, an exhaust outlet formed in said returnduct intermediate the .ends the'reof'and communicating with the outsideair, a damper element overlying said outlet for controlling the amountof air exhausted from said return duct, and a second damper elementdisposed at the point of communication between said' return duct andsaid first mentioned chamber for controlling the amount of airrecirculated throughsaid system.

2. A ventilating system for use in chick carrying trucks comprising achamber formed in the forward end of said truck and being in"communication adjacent its upper 'extreinity'with the outside air, apair of ducts communicating with said'chamberadjacentits lower extremityand at substantially right angular relation one to the other, one oisaidducts extending along one sideof' said truck and the other being orsubstantially L formation and extending along the other side of saidtruck, blower 'means'mounted in said chamber forimpelling air into saidducts, said ducts'each' having a plurality of'opposed slots'i'ormedalong its marginal edges in the upper race thereof and havingawidthsuiiicient to'sup'portthereonfa' plurality Oftiered chick boxesbetween said opposed slots, a return duct mounted to the top wall ofsaid truck'extending substantially the entire lehgth thereo'f and beingin cemmu'meanoe a't'its forwardfndwith said cham'h'er, said return duct'-havi rig a plurality or slots formed in'i'ts'sidwalfa' an exhaustoutlet formed in said return duct 'i 'itermediatethe ends membraneconimui'i'icatihg" with thedutside air, means for controllingthepassageof air through said exhaust outlet, a second exhaust outletformed in said return duct adjacent its forward end, damper meansiorjcontrolling the passage'of air through said second exhaust outlet,a'd'amper nemenrmeumes said return adjacent its point of communicationwith said chamber, means forsimultaneously controlling said secondmentioned exhaust outlet dampermeans and said p r l lm l tsa me n ,cqm ins i'ha dl pivotally connected ,exteriorly of "the walls defining saidchambe1',said damper element being integral with said pivotalconnection,,and'linkage connecting said hendle and saidjdamper means whereby amovement of said ,handle fsimultaneous'lybpens rsaidldampjer,jele'mentahd, closes said dam er means or vice .yersa.

' :B. DAVIS.

REFERENCES CITED The following references are of record inthe filelofthis patent:

N D STATES in -TENT

